pyroclastic flow: Quick Facts

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Also Known As	glowing cloud • glowing avalanche

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pyroclastic flow

A chart categorizes common textural terms for rocks by grain size in millimeters, dividing them into igneous and metamorphic, sedimentary, and pyroclastic types, with terms like phaneritic, sand, silt, breccia, and ash shown in relation to size.

Magma streaming down a volcano.

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tephra ash flow nuée ardente Pelean eruption ejecta lava bomb lapillus lahar

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